P2494 – BMW DTC

BMW DTC P2494 – EGR Cooler Bypass Position Sensor Circuit Low (Bank 1)

DTC P2494 meaning on BMW

The Diagnostic Trouble Code (DTC) P2494 for BMW refers to the EGR (Exhaust Gas Recirculation) Cooler Bypass Position Sensor Circuit registering a low signal on Bank 1. This indicates an issue with the sensor responsible for monitoring the position of the EGR cooler bypass valve in the engine’s exhaust system.

BMW DTC P2494 symptoms

Symptoms of DTC P2494 on a BMW may include:

• Check Engine Light (MIL) illuminated on the dashboard
• Reduced engine performance or power
• In some cases, the vehicle may go into a reduced power or limp mode

BMW DTC P2494 causes

Common causes of DTC P2494 on a BMW include:

• Malfunctioning EGR cooler bypass position sensor
• Wiring or connector issues in the sensor circuit
• Faulty EGR cooler bypass valve

BMW DTC P2494 seriousness

While DTC P2494 may not always result in immediate drivability issues, it is important to address this fault promptly to prevent potential damage to the engine or emissions system. Ignoring this fault could lead to reduced engine efficiency and increased emissions.

How to diagnose DTC P2494 on BMW

To diagnose DTC P2494 on a BMW, you can follow these steps:

1. Use a diagnostic scanner to retrieve the fault code and related freeze frame data
2. Inspect the wiring and connectors in the EGR cooler bypass position sensor circuit for any damage or corrosion
3. Test the EGR cooler bypass position sensor and the EGR cooler bypass valve for proper operation

How to fix DTC P2494 on BMW

To fix DTC P2494 on a BMW, you can consider the following actions:

1. Replace the faulty EGR cooler bypass position sensor
2. Repair or replace any damaged wiring or connectors in the sensor circuit
3. If necessary, replace the EGR cooler bypass valve

How to erase DTC P2494 on BMW

To erase DTC P2494 on a BMW after fixing the underlying issue, you can:

1. Use a diagnostic scanner to clear the fault code and reset the Check Engine Light
2. Ensure that the repair has been successful by performing a test drive and monitoring for any recurrence of the fault code

Recommended tools & DTC Scanners for BMW

Best Diagnostic App for modern BMWs: BimmerLink

Recommended Bluetooth adapter for Bimmerlink: OBDLink CX

Cable adapter for Bimmerlink: Enet Cable USB Type C

For older BMWs we recommend: Autel AutoLink AL319 (2024 version)

Easy-to-use Multimeter for reliable diagnostics: AstroAI Auto-ranging Multimeter

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